Part of Home Live Art's 'It's Great Outdoors' strand of the Watch This Space festival, the sleepover takes place in teepees on the National Theatre Square (those attending should bring a sleeping bag) and includes a sing-song and storytelling around the camp fire, star-gazing with astronomer Tom Kerss, as well as a chance to make a clay egg cup and have it fired overnight in the kiln ready for a boiled egg breakfast. Prior to the sleepover are free, family events including a bunting-making workshop, bushcraft, a performance by the Dulwich Ukulele Band, and archaeologist-led foreshore walks by the Thames. Booking for the sleepover is essential via 020 7452 3445. Age 7+.